Error: Call to undefined function in Command line code on line 1

Question

i am using my command line to excute a method within a class. however i keep getting the following message:

Error: Call to undefined function test() in Command line code on line 1

this is my class and method:

class DatasetTest
{
   public function test()
    {
       echo ""worked";
   }

}

this is my command line order:

$ php -r 'require "DatasetTest.php"; test();'

i also tried:

$ php -r 'require "DatasetTest.php"; $this->test();'

but got following message;

Error: Using $this when not in object context in Command line code on line 1

Duplicate? https://stackoverflow.com/questions/15499513/php-call-class-method-function — Alejandro, May 16 '18 at 10:25

score 1 · Accepted Answer · answered May 16 '18 at 10:25

You cannot execute a method without instantiate the object, unless you define it as static.

Solution #1

class DatasetTest
{
   public static function test()
   {
       echo "worked";
   }

}

There is also a mistake that i've corrected with double quotes. Then you can execute

$ php -r 'require "DatasetTest.php"; DatasetTest::test();'

Solution #2

function test()
{
    echo "worked";
}

Then

$ php -r 'require "DatasetTest.php"; test();'

1 Answers1